ASCII | 3964R | RK512
Overview of the SPI 3
9
Connecting up to the PROFIBUS
Note!
You should only use commercially available PROFIBUS connectors for con-
necting to the bus. We recommend you to use connectors from ERNI and Sie-
mens.
If the SPI 3 is installed at the beginning or end of the PROFIBUS cable segment,
you should use PROFIBUS connectors which contain an integrated terminating
resistor. We recommend you to use connectors from ERNI and Siemens.
To ensure that the SPI 3 functions without errors, you must ground the screen
of the PROFIBUS cable.
– Ensure that the PROFIBUS connector uses the pin assignments shown in »Technical
– Attach the PROFIBUS connector to the PROFIBUS interface socket on the SPI 3
and secure the connector with the retaining screws.
Setting the PROFIBUS address
Note!
The SPI 3 only updates its PROFIBUS address during a restart. Set the PROFI-
BUS address on the SPI 3 before switching on the power, or turn off the power
briefly after changing the PROFIBUS address.
PROFIBUS addresses 00 to 02 are reserved. You should only use addresses
between 03 and 99.
– The PROFIBUS address is set with the two rotary switches .
Example:
In order to set the PROFIBUS address 68, turn the rotary switch for the 10’s to
6, and the rotary switch for the units to 8.
2
5
RUN
PB
TX
RX
X
10
X
1
Station
